Knife



FIG. 1 is a perspective view of a knife in accordance with the present design;

FIG. 2 is a right side view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a back view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines are for illustrative purposes only and form no part of the claimed design. The shading represents contour of the claimed design. 

CLAIM The ornamental design for a knife, as shown and described. 